Datasheet Microchip MIC24421 — Datenblatt

MIC24420/MIC24421
2.5A Dual Output PWM Synchronous
Buck Regulator IC General Description Features The MIC24420/MIC24421 are synchronous PWM dual
output step down converters with internal 2.5A high-side
switches. The MIC24420/MIC24421 has an integrated lowside gate driver for synchronous step-down conversion by
connecting an external N-channel MOSFET to achieve
high efficiencies in low duty-cycle applications.
The MIC24420 switching frequency is 1MHz and the
MIC24421 switching frequency is 500kHz. A patented
control scheme allows the use of a wide range of output
capacitance from small ceramic capacitors to large
electrolytic types with only one compensation component.
A 2% output voltage tolerance over the temperature range
allows the maximum level of system performance. The
MIC24420/MIC24421 power good signal allows full control
for sequencing the output voltages with minimum external
components.
An adjustable current limit allows the use of smaller
inductors in lower current applications.
The MIC24420/MIC24421 is available in a ePad 24-pin
В®
4mm x 4mm MLF package, and has an operating junction
temperature range of –40В°C to +125В°C. 4.5V to 15V input voltage range …